Sonar traveler and mainsheet systems are straight forward and effective. The mainsheet system consists of a car mounted fiddle (Harken 57mm Carbo H2655) and boom fitted fiddle with becket (Harken 57mm Carbo H2656). Then there is the deck mounted swivel base with cam cleat (Harken H144) and a ratchet (Hexaratchet H009 or 57mm Carbo Ratchet H2135). The traveler is a Harken Small Boat system. This consists of the Harken High Beam Track (H272512), a High Load car with three way pivoting toggle (H2731), heavy duty track end stops (H264 – sold as a pair). Traveler control is as simple as mounting cam cleats (H150) and check blocks (Bullet H132 or CarboH350) at either end of the track and adding single blocks with beckets to the car (Bullet H083 or Carbo H341). Generally your traveler line should be ¼” and continuous.
If a bridle mainsheet is not your preference, then at least get rid of the extra mainsheet length. By simply adding this spectra strop between your mainsheet car and lower mainsheet block you will reduce the amount of mainsheet you will have to pull in at the leeward mark by about six feet.
Would you like to have more control of your main during tacks? Then think about adding a mainsheet bridle system. It is really easy to do. Just add a second car to your existing track. Transfer one of the traveler line blocks from your old car to the new one. Attach the spectra straps to your cars and at the lower mainsheet block and go racing. Another benefit is that it will reduce the amount of mainsheet you will have to pull in at the leeward mark by about six feet.
Half the weight of the traditional system and with no sheave to break or bind, the Cam Traveler System is a great alternative. It's smaller than the other system, making it less likely to bang your shins. Available with the cam cleats, bracket and mounting hardware (OBM0006) or as the whole system with H468 included (OBM0006KIT).
Easily adjustable, it is great for Paralympic teams as well. Both systems are for one side of the boat.